Article
Engineering, Electrical & Electronic
Hongkun Li, Weidong Zheng, Tongyu Dai, Qiao Zhu, Weiqun Liu
Summary: This study investigates the application range and essential difference of the hybrid electric-thermal load operation strategy in CCHP systems. The results show that the electric load operation strategy is better than the thermal load operation strategy in terms of energy saving, economy, and environment when a large amount of heat is required. However, when electricity demand is high, the thermal load operation strategy can minimize energy loss. To achieve the best performance, the gas-to-electricity price ratio and the gas-to-electricity environmental impact ratio must exceed the efficiency of the power generation unit.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Thermodynamics
Junjie He, Zihao Guo, Yajun Li
Summary: District cooling systems have been optimized using a collaborative optimization method and a compatible multi-objective optimization model. The method divides the cooling period into different cooling scenarios based on cooling load characteristics and solves the optimization models under different chiller configurations and cooling scenarios. The proposed method reduces annual costs and electricity consumption, demonstrating its effectiveness in improving economic and energy performance.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Guodao Zhang, Yisu Ge, Xiaotian Pan, Yun Zheng, Yanhong Yang
Summary: This paper presents a holistic structure for optimal operation of a combined cooling, heating, hydrogen, and power (CCHHP)-based microgrid (MG). The structure is developed to minimize daily operation cost and carbon pollution emissions, considering uncertain sources. The incentive-based demand response (DR) program is used to increase flexibility and manage energy market opportunities.
Article
Energy & Fuels
Yuan Zhou, Jiangjiang Wang, Fuxiang Dong, Yanbo Qin, Zherui Ma, Yanpeng Ma, Jianqiang Li
Summary: This paper proposes a novel operational strategy for CCHP systems by analyzing system flexibility and evaluating design and operational performance using a flexibility index. A multi-objective optimization model is constructed to improve the economic performance and flexibility of the system.
Article
Thermodynamics
Ling-Ling Li, Xin-Yu Ren, Ming-Lang Tseng, Ding-Shan Wu, Ming K. Lim
Summary: This study developed a mathematical model to optimize the configuration of a hybrid system combining solar thermal and photovoltaic technologies with combined cooling, heating, and power functions. The results showed that compared to other strategies, adopting the proposed strategy achieved better energy savings and carbon emission reductions.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Jiangjiang Wang, Yuan Zhou, Xutao Zhang, Zherui Ma, Yuefen Gao, Boxiang Liu, Yanbo Qin
Summary: This study proposes a life cycle assessment-based optimization model for hybrid solar-assisted CCHP system, aiming to reduce environmental impacts through multi-objective optimization with robustness considerations. Partially covered collectors can lower environmental impact by optimizing system configurations and energy compositions, making them more cost-effective and feasible.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ling-Ling Li, Sheng-Jie Zheng, Ming-Lang Tseng, Yu-Wei Liu
Summary: This study proposes a novel operation strategy named following the state of thermal storage tank (FST) to enhance the economic, energy and environmental performance of combined cooling, heating and power system. A system incorporating thermal storage tanks, batteries, micro turbines and photovoltaic generation units is built to assess the performance of different strategies. By using a multi-objective seagull optimization algorithm (MOSOA), the study achieves optimal solutions for economic, energy and environmental objectives simultaneously, highlighting the superiority of FST strategy over other strategies.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Rafal Figaj, Maciej Zoladek
Summary: This study presents an experimental and numerical investigation of a solar dish system with thermal collectors for heating and cooling purposes. The dynamic simulation shows that different configurations of solar energy collection and thermally driven chillers can effectively match space cooling demand. The overestimation of produced energy by the model compared to experimental study is less than 5%. The results also indicate varying simple payback periods for different system configurations, highlighting the economic feasibility of solar heating and cooling applications.
Article
Thermodynamics
Nattaporn Chaiyat
Summary: The study evaluated a cascade air-cooled multigeneration system using the new 3,4E-Chaiyat models, finding that first-law efficiency was higher than second-law efficiency and determining that the suitable cooling type is air-cooled.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Energy & Fuels
Chunyan Lu, Jiangjiang Wang, Rujing Yan
Summary: This paper discusses the integration of an energy storage device into a CCHP system to address thermoelectric coupling limitations under dynamic uncertainty. It proposes a multiobjective optimization model for determining the optimal energy storage capacity and uses a probability-constrained method to handle load uncertainty. The economic and environmental performance of the CCHP system is evaluated through total annual cost and carbon dioxide emission assessment.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
L. Marletta, G. Evola, R. Arena, A. Gagliano
Summary: The availability of low-cost electricity-driven air-conditioning systems has led to an increase in electricity demand for space cooling. Thermally-driven solar-assisted cooling systems are a promising alternative, but their economic viability is still uncertain. To address this, many EU states, including Italy, have implemented subsidies proportional to the thermal energy produced by solar collectors. This study examines the suitability and consistency of these subsidies, focusing on a case study in Palermo, Italy. The results show that the proposed solar-assisted absorption cooling system can significantly reduce primary energy demand and CO2 emissions compared to conventional electric chillers.
Article
Chemistry, Multidisciplinary
Wei-Chang Yeh, Wenbo Zhu, Yi-Fan Peng, Chia-Ling Huang
Summary: Energy demand is increasing rapidly, leading to energy depletion and greenhouse effect issues. To address these problems, researchers have conducted optimization studies on the Combined Cooling, Heating, and Power system (CCHP). The original multi-objective optimization problem was converted into a single-objective optimization problem using the Technique for Order Preference by Similarity to and Ideal Solution (TOPSIS). A hybrid algorithm called SSO-DE, which combines simplified swarm optimization (SSO) with differential evolution (DE), was proposed to solve the optimization problem efficiently.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Haesung Jo, Jaemin Park, Insu Kim
Summary: With the increasing focus on the environment and safety, reducing reliance on coal-fired power generation and improving the environmental friendliness of power generation have become increasingly important. Using CCHP systems instead of coal-fired systems may face challenges, but purchasing power from external grids is essential in areas where CCHP systems are built. Optimizing the control algorithm for CCHP systems can improve energy efficiency, reduce costs, and minimize emissions.
Article
Environmental Sciences
R. J. Kavitha, C. Thiagarajan, P. Indira Priya, A. Vivek Anand, Essam A. Al-Ammar, Madhappan Santhamoorthy, P. Chandramohan
Summary: In the digital era, energy efficient building is a popular research topic due to increasing concerns about their environmental impact and energy consumption. Designing a suitable building layout, including overall areas, glazing area distribution, orientation, height, and compactness, has a direct impact on the heating load and cooling load of residential buildings. Accurately predicting these loads is crucial for effective energy management and improved quality of life.
Article
Engineering, Mechanical
Guido Francesco Frate, Luigia Paternostro, Lorenzo Ferrari, Umberto Desideri
Summary: This study investigates the impact of packed-bed behavior on turbomachines operating conditions in pumped thermal energy storage (PTES) systems. The results show that PTES systems have excellent part-load performance, but off-design operation induced by packed-bed thermal behavior may significantly reduce system performance.
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME
(2022)
Article
Engineering, Mechanical
Alessandra Ghilardi, Guido Francesco Frate, Andrea Baccioli, Dario Ulivieri, Lorenzo Ferrari, Umberto Desideri, Lorenzo Cosi, Simone Amidei, Vittorio Michelassi
Summary: The waste heat recovery from gas turbine exhaust is a common method to improve performance and reduce CO2 emissions in industrial facilities. This study compares several alternative technologies, including ORCs, RCs with water and ammonia mixtures, supercritical CO2 cycles, and sCO2 cycles with CO2 mixtures, for recovering gas turbine waste heat. The results show that ORCs can achieve the lowest levelized cost of energy if flammable fluids can be used, while Rankine cycles with a constant composition mixture of water and ammonia are a promising alternative.
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME
(2023)
Article
Thermodynamics
Ehsanolah Assareh, Siamak Hoseinzadeh, Djamal Eddine Ghersi, Ehsan Farhadi, Sajjad Keykhah, Moonyong Lee
Summary: This study proposes a system that can reduce environmental pollution emissions while simultaneously improving production capacity by combining thermoelectric generation, organic Rankine cycle, and gas turbine based on the Brayton cycle. The results show that the system performs best in cooler climates such as Mashhad.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Energy & Fuels
Nan Zheng, Hanfei Zhang, Liqiang Duan, Qiushi Wang, Aldo Bischi, Umberto Desideri
Summary: The present study proposes a novel multi-generation system that integrates various renewable energy sources for efficient energy production and utilization. The system consists of a solar-driven proton exchange membrane electrolysis cell, a solid-oxide fuel cell, a parabolic trough photovoltaic thermal collector, and thermal energy storage. The system stores surplus solar electricity as high-pressure green hydrogen and utilizes it with a hydrogen-fueled solid-oxide fuel cell to meet the electricity demand at night. The system also utilizes solar heat and waste heat for cooling/heating and domestic hot water production. The techno-economic feasibility of the system is evaluated, and the results show excellent energy and economic performance.
Article
Energy & Fuels
Simin Anvari, Andrzej Szlek, Alessia Arteconi, Umberto Desideri, Marc A. Rosen
Summary: This paper proposes a cogeneration system using biomass fuels for electricity and cooling, and investigates the effects of different steam injection methods on system efficiency and performance. Through analysis and comparison, it is concluded that the cycle with simultaneous steam injection into both the gasifier and combustion chamber offers the best thermodynamic, economic, and environmental balance. The paper also conducts a parametric study to validate the results.
Review
Green & Sustainable Science & Technology
Hamed Chehrmonavari, Amirhasan Kakaee, Seyed Ehsan Hosseini, Umberto Desideri, George Tsatsaronis, Gus Floerchinger, Robert Braun, Amin Paykani
Summary: There is a growing demand for new energy conversion devices with high efficiency and low emissions. Solid oxide fuel cells (SOFCs) have received attention due to their advantages in efficiency, fuel flexibility, low emissions, and waste heat utilization. The integration of SOFCs with internal combustion engines (ICEs) can further increase overall system efficiency and has potential applications in stationary power generation and heavy-duty systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Energy & Fuels
Lorenzo Ferrari, Gianluca Pasini, Umberto Desideri
Summary: The need to reduce greenhouse gas emissions is driving actions to decarbonize the energy sector. Increasing the penetration of renewable energy could help reduce emissions, but the variable nature of solar and wind power poses challenges. This study investigates the potential impact of increasing renewable energy in Italy and provides a useful evaluation platform that can be replicated in other countries.
Article
Chemistry, Physical
Ziyi Lu, Hanfei Zhang, Liqiang Duan, Zhen Wang, Qiushi Wang, Andrea Baccioli, Umberto Desideri
Summary: The active use of fuel cells and solar energy can help reduce fossil energy consumption and improve the system's work capacity, which is crucial for achieving carbon neutrality. In this study, novel solid oxide fuel cell-integrated solar combined cycle systems with different solar integration modes were proposed and investigated. The results showed that when the system used trough solar collectors to replace part of the heating load, it achieved the highest exergy efficiency, lowest unit exergoeconomic cost, and lowest specific CO2 emission rate, leading to maximum energy efficiency and optimal economic benefits.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Guido Francesco Frate, Lorenzo Ferrari, Paolo Sdringola, Umberto Desideri, Adriano Sciacovelli
Summary: This paper investigates the performance of multi-energy storage based on the Thermally Integrated Pumped Energy Storage (TIPTES) technology. The results show that TIPTES performs better than lithium-ion batteries in terms of thermodynamic efficiency and reduction of curtailed renewables. However, the high capital cost of TIPTES currently makes it financially unfeasible.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Umberto Desideri, Alaa Krayem, Eva Thorin
Summary: In recent years, energy prices in Europe have reached unprecedented levels and exhibited unexpected fluctuations. This paper investigates the fuel markets in Italy and incorporates insights from Sweden. The results reveal that Italy heavily relies on natural gas, with prices starting to rise at the end of 2021 despite minimal changes in demand during the period of 2017-2022.
Article
Thermodynamics
Sebastian Schaer, Aldo Bischi, Andrea Baccioli, Umberto Desideri, Jutta Geldermann
Summary: Many arid and semi-arid regions face freshwater scarcity and rely on seawater desalination. Seawater reverse osmosis (RO) is widely used due to its efficiency and low costs, but the energy sources are often from fossil fuels. The substitution by renewable energy sources (RES) is critical, but obstacles such as volatility and cost of electrical energy storage (EES) need to be overcome.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
R. Christodoulaki, I. S. Akmandor, O. Bayer, U. Desideri, L. Ferrari, G. F. Frate, V. Drosou
Summary: This article presents the materials selection, design, and dimensioning process of a latent heat storage tank that operates between a high-temperature heat pump and an Organic Rankine Cycle unit. The chosen heat storage material is the S117 Phase Change Material, with a melting point at 117°C, which matches the system's operational temperature at approximately 120°C. The tank configuration is optimized for efficient heat transfer, based on practical experience and is described in detail. Additionally, simulation results from the Computational Fluid Dynamic study are presented. This work should be beneficial for engineers designing compact heat storage tanks for medium-temperature applications.
INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY
(2023)
Article
Thermodynamics
Ziyi Lu, Hanfei Zhang, Liqiang Duan, Qiushi Wang, Andrea Baccioli, Umberto Desideri
Summary: This research proposes a combined cooling, heating, and power system that integrates an ammonia-driven molten carbonate fuel cell and solar energy. The system's energy, exergy, environmental, and economic performance are comprehensively analyzed, and multi-objective optimization is conducted to balance cost-effectiveness and energy efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
Ziyi Lu, Hanfei Zhang, Liqiang Duan, Ruiyun Zhang, Chengzhuang Lu, Umberto Desideri
Summary: Hydrogen fuel cells can utilize ammonia as a carrier to reduce dependence on fossil fuels. Research shows that direct ammonia molten carbonate fuel cells perform optimally at 680 degrees C with an ammonia conversion rate of 91.6%.
Article
Thermodynamics
Simin Anvari, David Vera, Roque Aguado, Francisco Jurado, Umberto Desideri
Summary: This article explores the feasibility of utilizing olive oil waste for biomass gasification in combined heat and power systems in Moroccan mills. The experimental results show that the system has an energy efficiency of 42% and an exergy efficiency of 19%. Investment expenses contribute significantly to the system costs, and the cost of exergy destruction is also important.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.